KR100197063B1 - Seismoscopic element - Google Patents

Abstract

[Technical field to which the invention described in the claims belong]

The present invention relates to a omnidirectional sensing element and a method of manufacturing the same.

[Technical challenges that the invention is trying to solve]

That is, the present invention is to provide a technical means of easy construction and manufacturing method from the relative position alignment of the upper insulator and the radial contact member to the bending and fixing of the wing.

[Summary of the solution of the invention]

An airtight container is formed by a cylindrical conductive housing having a bottom surface and a lid 3 securely sealed in a penetrating state by an electrically insulating filler in a hole punched in the center of the conductive disc. The inertial sphere 8 which is free to be driven is accommodated in the airtight container, and from above the flexible wing 9A of the conductive upper contact member 9 comes into contact with the inertial sphere 8 so as to always maintain a conductive state. The lower part is a cup-shaped upper insulator (11) (51) (61) (in the manufacture of a normally closed contact type sensing element having a structure in which electrical connection with the conductive lower contact member (7) is disconnected when the sphere is driven. 71 has a through hole 6B through which the conductive terminal pin 4 is inserted in the center thereof, and the upper contact member 9 is supported on the cup bottom surfaces 61B and 71B by the support plates 10 and 62. The above described flattening posture by inserting the support plate 10, 62 and 72 into the 72 The opening 9A is press-formed like a press molding to form a cylindrical deformed shape or an umbrella deformed shape having a flat predetermined inclination of the head, and the supporting plates 10, 62 and 72 are formed of the conductive terminal pins 4, respectively. The lower insulator 6 having the lower contact member 7 gripped and fixed at a predetermined position is mounted on the inner bottom side of the housing, and the inertial sphere 8 is mounted thereon. The disc of the lid 3 is hermetically fixed to the opening end of the housing in such a state that the upper contact member 9, which has completed the molding, is inserted into the housing and is in a state of being placed in constant contact with the inertia sphere 8 at all times. Method for producing a sensing element characterized in that.

[Important Uses of the Invention]

The present invention relates to a omnidirectional damping element attached to a signal processing device for security control and detects vibrations such as earthquakes and sends the detection signal to the signal processing device and a manufacturing method thereof.

Description

Sensing element and manufacturing method

1 is a longitudinal sectional view of the first embodiment of the present invention.

2 is a cross-sectional view taken along the line A-A in FIG.

3 is an enlarged explanatory view of the main portion near the bottom of FIG. 1;

4 is an exploded view showing the form before assembling the main part in FIG.

FIG. 5 is a longitudinal sectional view corresponding to FIG. 1 of the second embodiment in which the main configuration is the same as the first embodiment and a part of the housing is modified.

FIG. 6 is a longitudinal sectional view corresponding to FIG. 1 of the third embodiment in which the spacer is added to the lower insulator in FIG.

FIG. 7 is a longitudinal sectional view corresponding to FIG. 1 of the fourth embodiment in which another part of the housing is modified for the same purpose as FIG.

8 is a longitudinal sectional view corresponding to FIG. 1 of the fifth embodiment in which the shape of the upper insulator in FIG. 1 is partially modified.

9 to 13 show a sixth embodiment related to a manufacturing method which is one feature of the present invention, wherein FIG. 9 is a longitudinal sectional view corresponding to FIG.

FIG. 10 is a development view showing a planar shape before assembly of an upper contact member commonly used in all embodiments. FIG.

FIG. 11 is a bottom view for explaining the manufacturing gist of the main part of FIG. 9 taken out and sandwiched with a support plate combining the upper insulator and the upper contact member. FIG.

FIG. 12 is a partially enlarged vertical sectional view corresponding to FIG. 9 for explaining a state in which the three members shown in FIG. 11 are combined with the conductive terminal pins. FIG.

Fig. 13 is an enlarged perspective view of a state in which the upper insulator in the embodiment is reversed.

FIG. 14 is a vertical sectional view corresponding to FIG. 1 showing a seventh embodiment which is a modification of the sixth embodiment.

FIG. 15 is a partial enlarged cross-sectional view of a main part of FIG.

16 and 17 are explanatory diagrams showing an example of use of the sensing element of the present invention, in which FIG. 16 is a longitudinal cross-sectional view of the present example and FIG. 17 is a longitudinal cross-sectional view as an explanatory view seen from the side of FIG.

18 to 20 show examples of the sensing element prior to the present invention, and FIG. 18 is a vertical sectional view corresponding to FIG.

19 is a cross sectional view taken along line B-B in FIG. 18;

Fig. 20 is a partially enlarged vertical sectional view for explaining the deviation of the positional relationship between the lower contact member and the lower insulator, which are shown in an enlarged view of the main part of the configuration.

* Explanation of symbols for main parts of the drawings

2A: protrusion 3: lid

4: conductive terminal pin 6: lower insulator

6A: Slope 6B: Through Hole

7: lower contact member 8: inertia sphere

9: upper contact member 9A: wing

10, 62, 72: support plate 11, 51, 61, 71: upper insulator

22A: Stair part 32: spacer

51A: projection 61B, 71B: cup bottom

61F, 71E: Evacuation Home 61G: Information Home

The present invention, for example, is attached to a signal processing device for security control of oil heaters, gas combustion equipment or other electrical equipment for heating, to detect the vibration of the earthquake, etc. to send the detection signal to the signal processing device omnidirectional sensing It relates to an element and a method of manufacturing the same.

In recent years, by using such a damping element, appropriate security measures such as automatic fire extinguishing of various heating devices or fuel supply devices through an automatic security control device in case of an emergency such as an earthquake are taken.

Some types of shock sensing elements for emergency vibration detection have been introduced for this purpose, but in general, miniaturization is desired.

The sensing element of the present invention belongs to the normally closed contact switch type, and more specifically, is a type of outputting a detection signal of contact OFF by an emergency sensing operation of a metal sphere.

Conventional normally closed contact sensing elements include mercury in addition to using this metal sphere, which has the advantage of satisfying the miniaturization requirement and obtaining stable operation again and again over the long term. Therefore, there has been a demand for a damping element having mercury-proof copper without mercury.

However, by simply replacing mercury, which is a conductive liquid, with a metal sphere, even if it is a small vibration, not an emergency vibration such as an earthquake, the OFF signal is output or the holding state of the normally closed contact becomes unstable, which may cause malfunction of the signal processing device. Problem occurs.

Here, the present applicant has previously presented a normally closed contact type sensing element that realizes a miniaturization requirement such as mercury type copper by using a metal sphere in Japanese Patent Application No. 6-208136, which is a patent application in Japan.

The present invention aims to improve the function so that it will not be impaired even in the event of excessive vibrations such as severe handling or transportation, and maintain stable performance for a longer period of time. It's been improved.

That is, the present invention is primarily intended to further improve and develop the technology disclosed in Japanese Patent Application No. 6-208136.

Before entering the technology of the present invention, the configuration of the prior art will be briefly described based on FIGS. 18 to 20 in the accompanying drawings.

The damping element 101 constitutes an airtight container by the metal housing 102 and the lid 103.

In the lid 103, the conductive terminal pin 104 in which the through hole is drilled in the metal plate 103A is hermetically penetrated by the electrically insulating filler 105.

The bottom surface of the housing 102 is formed with an inclined surface that gently rises concentrically from the center to the outside, and has a lower insulator 106 having a through hole 106C formed in the center thereof, and ribs 106F provided on the peripheral wall thereof. Press-fitted through

The lower insulator 106 is provided with a gap between the bottoms of the housing by the legs 106A and 106B, and is provided with a lower contact member 107 made of a material having elasticity in the gap.

The fixing portion 107B of the lower contact member 107 is fixed to fit the fixing leg 106B, which also serves as the leg of the lower insulator 106, and the tip of the contact portion 107A which is almost at the center of the member is the lower insulator ( It is arrange | positioned so that a predetermined dimension can penetrate upwards from the through-hole 106C perforated at the center part of 106.

The lower contact member 107 is provided with a contact piece 107C protruding in the outer circumferential direction, and the lower contact piece is electrically connected to the housing certainly by sandwiching the contact piece 107C with the housing 102 and the lower insulator 106. do.

A conductive inertial sphere 108 is electrically mounted on the inclined surface of the lower insulator 106. Usually, the inertial sphere 108 is disposed on the through hole 106C of the lower insulator and the lower contact member 107 is The contact portion 107A is pushed down against the upward biasing force to be imparted while maintaining contact with this normally.

The upper contact member 109 having a plurality of flexible wing portions 109A radially disposed on the inner end of the conductive terminal pin 104 is electrically fixed, and always inertial near the wing end of the upper contact member 109. It is in contact with the sphere 108.

In addition, a fixing plate between the conductive terminal pin 104 and the upper contact member 109 is fixed to the support plate 110 to prevent the inertia sphere 108 from directly impacting the vicinity thereof.

In addition, in order to prevent the upper contact member 109 from coming into contact with the housing 102 to generate a communication call, the cup-shaped upper insulator 111 is fixed to surround the upper contact member 109. have.

The damping element 101 has a conductive terminal pin 104 and a housing (because the inertia sphere 108 and the lower contact member 107 are in contact with each other in the normal position mounted in the heavenly direction shown in FIG. 18). A converter is formed between 102 and FIG.

When the inertia sphere 108 is driven by vibration or inclination, the inertia sphere and the contact portion 107A are separated from each other, and the conduction path between the conductive terminal pin 104 and the housing 102 is disconnected.

In this damping element 101, the inertial sphere 108 is pushed against the lower contact member 107 by the upper contact member 109 as shown in FIG. It is possible to make contact, and it is possible to stabilize the contact state by using a small inertia sphere compared with the conventional one.

In the following order, the problem parts intended to be improved in the present invention with respect to the damping element having such a configuration are described in the following order. First, as shown in FIG. 19, the lower insulator 106 is shown in FIG. A fixing portion 107B having a radial slit is inserted into the fixing leg 106B of the bottom of the hole formed at one end of the substantially spiral lower contact member 107. Both are fixed by holding the fixed leg 106B by elasticity.

Here, since the lower contact member is made of the same material as phosphor bronze, and the contact area with the fixed leg 106B as a thin plate is very small, the contact pressure per unit area becomes large.

On the other hand, even if the material of the lower insulator 106 is high, for example, a fluorine resin (PFA), the fixing portion 107B of the lower contact member is fixed leg 106B of the lower insulator as shown in FIG. ), Especially when the feeding is deflected in one direction, the lower contact member is inclined or the positional relationship with the lower insulator is changed, for example, the contact part is hindered by contact with the through hole of the lower insulator. There is a possibility that problems such as this occur.

This is one of the problems that the present invention solves and deteriorates.

Next, in this configuration, the bottom plate of the conductive terminal pin 104 is not sandwiched between the opposing surfaces of the support plate 110 and the upper insulator 111 of each wing 109A of the upper contact member. At the welded portion with the support plate 110, the center hole portion is supported, that is, each wing piece has a gap on the upper portion of the support plate 110 so that it can be bent near the bottom root portion.

Here, if the fitting support of the upper insulator 111 in the housing 102 slides loosely, the bottom root portion of the wing 109A is pressed, which causes the spring characteristic to change and the damping operation characteristic to change.

The lower insulator 106 is also mounted in the housing 102 by press-fitting, but if the mounting is loosened, it is conceivable that the position is shifted due to impact or the like.

If the adhesive is used as a means for maintaining the fixing positions of the upper and lower insulators 111 and 106, there is a concern that the contact resistance of the converter is increased due to the solvent component or the like.

In other words, when it is concerned that the fitted state of the upper and lower insulators 111 and 106 is loosened, stabilizing the set positions thereof is also considered as one of the problems.

In addition, in order to maintain contact with the transmission of the inertia sphere 108 having sufficient flexibility in the wing portion 109A of the upper contact member 109 in the configuration of the sensing element 101, for example, a phosphor bronze plate is used. When used, it is necessary to make the thickness about 0.01 ~ 0.02mm.

However, it is difficult to process a metal plate of such thickness into a predetermined shape because of its flexibility, and it is required to have a high level of skill in order to even out the shape of each product, and to handle and maintain the shape after processing. There is a need for such, which is quite troublesome.

In addition, the collision of the inertia sphere 108 near the fixing portion between the upper contact member 109 and the conductive terminal pin 105 by the support plate 110 is prevented, but the surface of the inertia sphere is damaged or the inertia sphere surface is damaged during the collision with the support plate. There was a possibility that the surface treatment of the plating or the like was peeled off.

Again, in this structure of the damping element 101, whenever the vibration is received, the wing 109A of the upper contact member 109 is sandwiched between the inertia sphere 108 and the upper insulator 111 with impact. In the long term, this repetition causes a problem that the wing of the contact member deforms and the durability deteriorates.

That is, the inertia sphere 108 does not collide with the support plate 110, and the sphere does not fit the wing portion 109A at the edge of the cup of the upper insulator 111, thereby encountering more severe handling or unexpected excessive vibration. It is desirable to ensure that the properties are not impaired even when.

The present invention aims to provide technical means of solving each of the remaining problems with respect to the damping elements of Japanese Patent Application No. 6-208136, described above. The method of bonding with the lower insulator is changed from the conventional elastic bond coupling to the holding method using the fixing method by heating deformation so that the relative positions of the two are not shifted and the position of the upper or lower insulator in the housing is shifted. For the sake of concern, a partial external shape change is applied to the upper insulator, and a spacer is added to the lower insulator instead of the shape deformation, or a step is formed near the bottom on the housing side, or in the required position of the cylindrical circumferential wall. By forming a few projections, it is possible to present a strategy for this purpose. In order to perform bending processing of a predetermined shape on the wing portion of the upper contact member and to secure the connection to the upper terminal pin in this state, the end portion of the radial wing portion is guided at the cup-shaped inlet edge of the upper insulator. In the process of pushing the support plate to the center of the wing where the cup is positioned relative to the cup and bending it into the cup and fitting it to the bottom of the cup, each wing part is deformed to the required bending shape, and the support plate is in the state of sandwiching the upper contact member as it is. Welded to terminal pin.

In other words, the obvious feature of the present invention is to provide a technical means of easy construction and manufacturing method from the relative position alignment of the upper insulator and the radial contact member to the bending and fixing of the wing.

In addition, the above-described cup shape of the upper insulator prevents the inertia sphere from splashing at the stepped portion formed therein to prevent the sphere from colliding with the wing support plate, and in the outer edge of the cup as described above. Likewise, when assembling the upper contact member, the evacuation groove is formed radially to prevent the wing from being inserted by the electric contact of the inertia in the position where the support portion of the wing is to be supported, and for the wing support when assembling to the outer edge terminal of the evacuation groove. By forming the guide groove of the inertia sphere and the wing portion together to protect the long-term stable performance as a sensing element is characterized by that.

EXAMPLE

Next, the configuration of the first embodiment will be described with reference to FIGS.

The damping element 1 is comprised in the hermetic container which fixed the lid 3 to the opening end of the cylindrical metal housing 2 with a bottom surface by ring projection welding etc.

When the sealing is carried out, the air inside the container is first removed, and then sealed with a gas for preventing contamination such as hydrogen, helium, argon, and nitrogen, and then sealed to protect the surface of each contact member or inertial sphere described below from corrosion or fouling, thereby ensuring stability over a long period of time. It is desirable to obtain properties.

The lid 3 is a hole in which a through hole is drilled almost in the center of the metal disc 3A, and the conductive terminal pin 4 is hermetically sealed in the hole by an electrically insulating filler 5 such as glass.

A lower insulator 6 made of an insulator such as ceramic or synthetic resin is fixed to the inner bottom of the housing 2 by sliding a rib 6F provided on the outer circumference thereof into the inner circumference of the housing 2.

The lower insulator 6 has a leg portion 6C, and the lower contact member 7 is attached to the gap formed by the leg portion 6C.

On the upper surface of the lower insulator 6, an inclined surface 6A which gently rises concentrically from the center to the outside is formed.

In this embodiment, the shape of the inclined surface is on the conical surface obtained by rotating a straight line having a predetermined inclination angle, but the shape is not limited to this, but the conical surface of which the inclination angle changes midway or a curve having a gentle curvature up and down It also includes the concave or convex surface obtained by rotating.

In addition, the curvature may change gradually in the middle or gradually, unless the inclination direction changes.

The through hole 6B is formed in the center of this inclined surface 6A, and the contact part 7C of one end of the lower contact member 7 is inserted through the upper surface from the lower surface.

The lower contact member 7 is a flexible spring made of, for example, a phosphor bronze plate having a thickness of about 0.03 to 0.1 mm, and its planar shape, for example, shows a substantially spiral elastic portion 7B as shown in FIG. It is ring-shaped to have inward.

At the end of the elastic portion 7B, the contact portion 7C described above is provided at one end located almost at the center of the housing 2, and the tip portion thereof is erected at a right angle to the plane as shown in FIG. It is inserted through 6B.

In the vicinity of the contact portion 7C, a stopper 7D for restricting the amount of movement in the upward direction of the contact portion by the restoring force of the elastic portion 7B is provided so that at least both ends thereof are caught by the through hole 6B. .

The contact portion 7C of the lower contact member 7 may be plated with precious metal such as gold or silver, or other surface treatment to prevent the formation of an oxide film.

The lower contact member 7 is inserted through the leg portion 6C of the lower insulator 6 into one of the plurality of through holes 7E as shown in FIG. 4 and at the same time, the lower insulator ( Two fixing parts 6D formed in 6) are inserted through.

Thereafter, as shown in FIG. 3, the lower contact member 7 is gripped and fixed to the lower insulator 6 by widening the width of the tip of the fixing part 6D by an electric welder, an ultrasonic welder or the like.

A connecting piece 7A extends at one edge of the lower contact member 7, and the connecting piece 7A is press-mounted to the housing 2 together with the lower insulator 6. The inner wall of the housing 2 and the outer wall of the lower insulator 6 are inserted into each other, so that the electrical connection is secured by making firm contact with the housing 2.

On the inclined surface 6A of the lower insulator 6, an inertial sphere 8 made of metal such as iron or stainless alloy thereof is housed.

This inertial sphere 8 can be made of various metals such as copper, its alloys, or hard lead, in addition to iron, and is easy to oxidize in iron or equivalent air, and the oxide film is preferably inferior in conductivity. Silver and gold or silver plated precious metals or other surface treatment is selected according to the purpose, but if the surface is a solid sphere having a conductivity suitable for the purpose of use, the surface treatment of the material is not limited thereto.

The inertial sphere 8 is placed on the through hole 6B, which is the center of the inclined surface 6A at the time of normal normal posture, and is contacted to push down the contact portion 7C of the lower contact member 7 described above. And it maintains the contact state without being driven until it receives a vibration of a predetermined acceleration or more.

When the damping element 1 receives a vibration of a predetermined value or more due to an earthquake or the like, the inertial sphere 8 is separated from the through hole 6B so as to travel on the inclined surface 6A and stop contact with the contact portion 7C.

In the case of the sensing element of FIG. 1, the transmission start speed α of the inertia sphere 8 is determined by the following equation when the radius of the inertia sphere 8 is R and the radius of the through hole 6B is r.

(G stands for gravitational acceleration)

In practice, however, the inertia sphere 8 is pressed by the upper contact member 9 described later and pushed up by the lower contact member 7, so that it is adjusted to a slightly different value.

The upper end member 9 is fitted to the inner end of the conductive terminal pin 4 so that the support plate 10 is fixed by welding such as butt welding.

A plurality of flexible wing portions 9A are radially disposed on the upper contact member 9.

In the present embodiment, six wing parts 9A are provided at a uniform angle, specifically every 60 degrees, centering around the conductive terminal pin 4.

For example, when the mass of the inertial sphere is about 0.7 to 1.5 g, a phosphor bronze plate having a thickness of 0.01 to 0.02 mm is preferable as the material of the upper contact member 9.

In the vicinity of the tip of the wing portion 9A of the upper contact member 9, the inertia sphere 8 is set so as to be located slightly inward of the surface position of the inertia sphere 8 in a free state where it does not exist. 8 is in contact with

Preferably, the wings have a width of about 0.3 mm, are sufficiently flexible, and at least two of them are always followed to maintain contact with the inertial sphere even when the inertial sphere 8 is driven.

The number of the wing portions 9A and the repelling force per one are determined in consideration of the influence on the rolling start speed of the inertia sphere 8, electrical contact resistance, and the like.

As can be seen in FIG. 1, the support plate 10 supports the inertia sphere 8 directly in the vicinity of the fixing portion of the upper contact member 9 and protects it from deformation.

For example, when the damping element 1 receives a vibration light during transportation, the inertia sphere 8 may spring up and reach a position above the dotted line 8A.

In this case, if the support plate 10 is not present, the inertia sphere 8 will collide near the fixing portion between the upper contact member 9 and the conductive terminal pin 4, causing the upper contact member 9 to cause undesirable plastic deformation.

In this way, when plastic deformation occurs at the bottom root side of the wing portion 9A, the amount of deformation increases at the tip of the wing portion 9A, which may greatly change its position.

However, in this embodiment, the support plate 10 can be arranged so that there is no deformation near the fixing portion of the upper contact member 9, thereby obtaining stable characteristics over a long period of time.

In addition, in order to prevent the upper contact member 9 from coming into contact with the housing 2 to transmit a conducting call in all lights and the like, the upper contact member 9 is surrounded by the same as the lower insulator 6 described above. An overlapping cup-shaped upper insulator 11 made of an insulating material such as ceramic or synthetic resin is press-fitted inside the opening end side of the housing 2 by ribs or the like provided on the peripheral wall thereof.

The insulator sphere 8 is formed by the terminal portion 11A and the plate edge portion 6E even at the maximum moving position of the inertia sphere 8 represented by the dotted line 8B in cooperation with the lower insulator 6. ), And at the position of this (8B), the inertial sphere 8 and the inner wall of the housing 2 are kept at a slight distance so that both members do not come into contact with each other.

Therefore, the damping element does not output the ON signal at the maximum amplitude, and can be turned OFF even when the control target device is inclined or inverted.

Referring to the operation of the damping element 1, when the damping element 1 is in a stationary position, the inertial sphere 8 is located on the through hole 6B of the inclined surface 6A and the lower contact member ( The contact part 7C of 7) is contacted, and the pressure of the inertia sphere itself and the upper contact member 9 are applied.

By this, the conductive terminal pin 4-the upper contact member 9-the wing part 9A-the inertia sphere 8-the contact part 7C-the lower contact member 7-the housing 2, and the disc 3A The converter consists of the path of.

When the damping element 1 receives a predetermined acceleration, for example, 0.2 to 1 second and has a horizontal vibration of 120 gal or more, the inertia sphere 8, which is a movable contact, leaves the through hole 6B to drive the inclined surface 6A. The contact with the contact portion 7C of the lower contact member 7 is stopped and the aforementioned converter is blocked for a predetermined time or more.

Therefore, the detection signal is transmitted to the signal processing device connected to the sensing element 1, and, for example, in the case of an oil heater or a gas combustion device, appropriate control measures such as automatic fire extinguishing are taken by the control device.

When the damping element 1 returns to the stationary state, the inertial sphere 8 returns to the through hole 6B in the center of the inclined surface 6A and again contacts the contact portion 7C to form a converter.

Since the wing portion 9A is always in sliding contact with the inertia sphere 8, the inertia sphere 8 can contact the contact portion 7C at the time of returning, so that a converter can be quickly formed.

The lower contact member 7 of the damping element 1 of the present embodiment inserts the fixing portion 6D of the lower insulator 6 into the through hole 7E formed in the lower contact member 7 as described above. By widening and deforming the insertion through part by heating or the like, the lower contact member is substantially gripped and attached to its entire direction.

For this reason, the lower contact member 7 is not a structure in which the lower contact member elastically applies stress to the lower insulator as in the conventional example, and the fixing force is also dispersed by the two fixing parts 6D. There is no inclination or misalignment due to feeding.

In the present embodiment, the fixing portion 6D of the lower insulator is made up of two places, but may be three or more places or one place.

In one case, in particular, the elastic part 7B of the lower contact member 7 is passed through a ring-shaped mechanism with a thickness to prevent displacement or isolation between the lower contact member 7 and the lower insulator 6. It is preferable to support the fixed part 7F of the outer side of () and to support it with a thicker fixed part.

In the present embodiment, the lower insulator is made of synthetic resin as an example. However, when at least one deformable member such as synthetic resin is integrally formed or embedded in the fixing part 6D, most of the lower insulator cannot be deformed by fastening or the like. It can also be composed of insulating materials.

As the deformable member, a so-called rivet or screw made of metal may be used as long as it does not affect the operation of the inertia sphere or the opening and closing of the converter, in addition to the synthetic resin.

Next, a second embodiment of the present invention will be described with reference to FIG.

In addition, in description of each following embodiment, the same code | symbol is attached | subjected to the same part as the above-mentioned embodiment, and detailed description is abbreviate | omitted.

In the sensing element 21 shown in FIG. 5, a stepped portion 22A is formed at the circumferential edge of the bottom of the housing 22, and the circumferential edge of the lower contact member 7 is placed on the stepped portion 22A. Mounted.

The lower contact member 7 is prevented from being displaced in all directions in the mutual direction with the lower insulator 6 by the same configuration as in the above-described embodiment, and again the circumferential edge thereof is a stepped portion of the housing 22. It is firmly fixed by sandwiching between 22A and the bottom edge portion 6G of the lower insulator 6.

In the present embodiment, the leg portion 6C does not need to reach the bottom of the housing as in the first embodiment. Therefore, if two or more fixing portions 6D are installed, the leg portion 6C is sufficient for positioning in the rotational direction. (6C) may be omitted.

In this embodiment, the fixing part 6D of the lower insulator 6 does not need to be heat-strained, and it is needless to say that it is preferable again if it is fixed by heat spreading-diffusion deformation or the like as in the above-described embodiment.

Next, a third embodiment of the present invention will be described with reference to FIG.

In the sensing element 31 of FIG. 6, a spacer 32 having a circular shape is mounted on the bottom surface of the housing 2.

This spacer 32 has the same operation as that of the step of the above-described embodiment, and does not interfere with the arrangement of the inner circumferential edge of the bottom of the housing 2 or the leg portion 6C of the lower insulator 6 by using metal or insulation. It does not have a shape.

Although not shown, the planar shape is preferably a leg of the lower insulator 6, supporting the circular arc-shaped fixing portion 7F on the left side of the lower contact member 7 and the flat plate portion on the right side as widely as possible. A hole fitted with the portion 6C and the fixing portion 6D is provided.

Also in this embodiment, the lower contact member 7 is prevented from shifting and rotating by the leg portion 6C and the fixing portion which is not visible in the main drawing, as in the above-described embodiment, and again the circumferential edge portion of the spacer 32 ) And the bottom contact member 7 are firmly fixed by being sandwiched by the bottom edge portion 6G of the bottom insulator 6.

In each of the above embodiments, the lower insulator 6 is fixed to the housing 2 by press-fitting while immersing and deforming the ribs 6F provided on the outer circumference thereof. For example, if the lower insulator is made of synthetic resin, Depending on the material, even if it is placed at a high temperature of 80 ° C or higher after being press-fitted, or if it does not happen like this, the lower insulator itself gradually plastically deforms for a long time, so that the initial indentation strength is not obtained, and the lower insulator is caused by impact. There is a possibility of misplaced.

For this reason, it is also possible to consider the adhesion of the lower insulator to the housing, but the work is cumbersome, and there is a concern about an increase in contact resistance due to the influence of each contact by the components contained in the adhesive.

For this reason, in the fourth embodiment, after the placement of the lower insulator, projections inwardly are provided at predetermined positions of the peripheral wall of the housing to prevent misalignment of the position of the lower insulator.

Referring to FIG. 7, the damping element 41 has the same structure as that of the first embodiment, but presses the lower insulator 6 together with the lower contact member 7 into the housing 2. After the fixing is secured by the protrusion, the lower insulator 6 may shift to the opening part side of the housing even when the indentation strength of the rib 6F decreases, as a predetermined part of the peripheral wall of the housing 2 is protruded inward. And you can make it fixed.

This projecting portion 2A prevents misalignment of the lower insulator 6, but has a size that does not affect the operation of the inertia sphere 8, even when the inertia sphere is driven to the maximum movement position 8B indicated by the dotted line. There is no contact between the projection 2A and the inertial sphere 8.

In addition, the cylindrical upper insulator 11 shown in each of the above-described embodiments has a larger than the through hole of the upper insulator by inserting the conductive terminal pin 4 through the center through hole and inserting the upper contact member 9 therein. It is fixed to the disc 3A side by fixing to the lower end of the terminal pin 4 by the welding etc. which butt-welds the support plate 10 of diameter.

Thereafter, the upper insulator 11 is press-fitted near the opening end of the housing 2 at the time of welding the disc 3A against the opening of the housing 2.

In the above embodiments, a slight gap is formed between the vicinity of the through-hole 11B (FIG. 7) of the upper insulator 11 and the support plate 10, and the wing portion 9A of the upper contact member 9 is lowered. It is effectively elastically deformed from the root portion to act on the inertial sphere 8.

However, when the upper insulator is made of synthetic resin, the indentation strength is lowered for the same reason as in the case of the lower insulator described above, and the upper insulator is lowered to the lower side as shown in the drawing, so that the above-described gap is eliminated and the operating state of the wing portion 9A is changed or inertia. The positional relationship with the sphere may change, and the operating characteristics may change.

In the fifth embodiment shown in FIG. 8, protrusions 51A protruding outward from the inner diameter of the housing 2 are provided in the upper circumferential edge of the upper insulator 51 in the sensing element 50. The projection 51A is engaged with the flange portion 2B of the opening end of the housing.

The projections 51A may be provided evenly at two or more portions in the circumferential edge, or may be formed so as to be flanged over the entire circumferential edge.

The size of the housing 2 is set so that it does not interfere with the welding of the opening portion of the housing 2 and the disc 3A.

The upper insulator 51 is press-fitted into the housing 2 as in the above-described embodiment, and at the same time, the protrusion 51A is mounted on the flange 2B of the housing 2 and positioned.

Therefore, even if the indentation strength of the upper insulator 51 decreases as in the related art, the position of the upper insulator 51 is maintained at a predetermined position by the projection 51A.

Although not shown, a protrusion such as the symbol (2A) shown in FIG. 7 is formed on the peripheral wall of the housing corresponding to the lower end of the upper insulator to prevent the positioning of the upper insulator and the undesirable movement downward. May be

As described above, in the first to fifth embodiments, the lower contact member 7 is mounted on the lower insulator 6 by a thermal fastening method, or the step portion 22A is formed on the housing side. Alternatively, the spacer 32 is added instead of the means of the step portion 22A to be sandwiched between the lower insulator 6 and the holding force for fixing thereof is concentrated at one position of the lower insulator 6 as in the prior art. This eliminates the problem and prevents the inclination and displacement of the lower contact member.

Further, by displacing the predetermined position of the housing corresponding to the upper insulator or the lower insulator to the inside, it is possible to prevent the shift of the positions of the respective insulators and to prevent the change of the characteristics of the sensing element.

Next, a sixth embodiment will be described with reference to FIGS. 9 to 13.

The configuration of the lower insulator 6 and the lower contact member 7 in the bottom of the sealed container structure and the mounting of the inertia sphere 8 are completely the same as in the first embodiment.

In the damping element 60 of the present embodiment, the upper insulator 61 has a different characteristic from the above-described examples, which are roughly cup-shaped with an insulating material such as synthetic resin, as can be seen in detail in FIGS. 12 and 13. A through hole 61A is formed in the center of the cup bottom surface 61B and fitted with the conductive terminal pin 4.

The inner side of the cup shape and the inlet edge of the cup have some steps.

First, inside the inlet edge portion 61E, a concave portion is formed at each position corresponding to the number of the wing portions 9A of the upper contact member 9 and the radial arrangement thereof.

The concave portion is referred to as a retreat groove 61F, which is suitable for the role below.

On the side of the inlet edge terminal in the evacuation groove 61F, a concave portion is formed again in the form of intentional edge cutting of the cup again.

Each of these concave portions is a groove in which the center portion thereof is deeply dug.

The groove is called the guide groove (61G) according to its role in the same shape.

The width of the guide groove 61G is sufficient to support the wing 9A. That is, as shown in FIG. 10, the upper contact member 9 before the bending process in which each wing terminal 9D is enlarged is indicated by the dotted line in FIG. As shown, when mounted on the inlet edge portion 61E of the upper insulator 61, this is supported by a relative arrangement relationship in which the centers of the two are coincident.

Inside the cup, a first step portion 61C is formed between the inlet edge portion 61E and the cup bottom portion 61B, and the step portion 61C is aligned with the radial position of the evacuation groove 61F arrangement. Again, the second stepped portion 61H formed deeper is formed.

That is, the first stepped portion 61C is divided into six by forming the second stepped portion 61H.

The north part 61D is formed so that a set of opposing thing may protrude toward a cup center in this divided 1st step part piece.

As a result, the planar shape of the cup bottom surface 61B is concave from both sides sandwiching the circular center.

A metal support plate 62 fitted in a planar shape of the cup bottom surface 61B is fitted therein, and is configured to sandwich the central portion of the upper contact member 9 with the cup bottom surface 61B at the time of its insertion. It is.

That is, the diameter of the non-blocked circumferential portion of the support plate 62 is set to a size in consideration of the thickness of the plate of the upper contact member 9. Specifically, when the support plate 62 is fitted and fitted, the wing portion 9A has a second diameter. The step opening portion 61J of the step portion 61H is pressed against the circumferential portion of the support plate 62 to be bent and deformed at approximately right angles as if it is pressed.

In this way, the center of the support plate 62 is fixed to the conductive terminal pin 4 by welding, in which the support plate 62 sandwiches the upper contact member 9 with the cup bottom surface 61B.

In order to avoid projections occurring in the welded portion 62A at the center of the support plate 62 during welding, the attachment hole 9B is drilled in the center of the upper contact member 9 in advance in order to prevent heat from welding. As a result, the influence of deformation of the upper contact member 9 is reduced, and the lower portion 9C around the attachment hole 9B is firmly clamped between the end face of the conductive terminal pin 4 and the support plate 62.

As can be easily understood by the above configuration, the present embodiment is different from the other embodiments described above, the upper contact member (9) in advance in the assembly to form a connection with the conductive terminal pin (4) via the support plate 62 It is not necessary to bend the portion 9A into a predetermined cylindrical canceller shape, and it is provided for assembly with the development posture as shown in FIG.

This assembly is characterized in that it relates to a manufacturing method as one of the objectives of the present invention, and to summarize the process first, that is, each of the guide groove (61G) of the inlet edge portion 61E of the upper insulator (61) As shown by the dotted line in FIG. 11, while each wing terminal 9D of the upper contact member 9 is engaged, the attachment hole 9B at the center thereof is located on the central axis of the upper insulator 61. As shown in FIG.

Next, the projection of the welded portion 62A in the center of the support plate 62 is aligned with the wing attachment hole 9B, and the cutout is engaged with the position of the north portion 61D to press the upper contact member 9 to bend the cup bottom surface ( When approaching 61B), each wing | blade part 9A penetrates into the divided space | interval of 1st step part 61C, and it pushes and bends the step part entrance edge 61J of the 2nd step part 61H, and is 12th. As shown in the figure, the posture is in the shape of a cylindrical chain.

Here, the support plate 62 is fitted to the cup bottom surface 61B of the upper insulator 61, and both are temporarily fixed to each other.

In addition, since the upper contact member 9 is a thin plate, it is maintained in a deformed state between the two.

Next, the tip of the conductive terminal pin 4 fixed in advance to the disc 3A is inserted into the through hole 61A of the upper insulator 61, and the upper contact member 9 and the upper insulator ( The support plate 62 is welded to the distal end of the conductive terminal pin 4 so that 61 is sandwiched between the conductive terminal pin 4 and the disc 3A.

As a result, the shape of the wing portion 9A clamped at the circumferential edge portion of the support plate 62 is determined to be a predetermined shape. For example, in the embodiment, as shown in FIG. It is set vertically.

The upper insulator 61, which has been assembled together with the upper contact member 9 on the side of the disc 3A, is sandwiched between the disc 3A by the support plate 62 and the housing 2 as in the other embodiments. Even if it is not press-fitted in the inside, positional shifts will not occur afterwards. Therefore, the prevention of positional shifts in the outer circumferential ribs and the fifth embodiment or the like becomes useless.

When the lower insulator and the lower contact member 7 are attached to the bottom of the housing 2, and the upper insulator 61 which has completed the above assembly is inserted, the wing portion 9A is pushed to enlarge the inertia sphere 8 As shown in FIG. 9, as shown in FIG. 9, the housing 2 and the disc 3A are concentrically arranged, and similarly to other embodiments, the damping element 60 is completed by gas substitution and sealing by ring projection welding.

The upper insulator 61 of the damping element 60 has a slightly more complicated form than that of the other embodiments, but is substantially the same in its basic role.

In other words, the upper insulator 61, like the other embodiments, cooperates with the lower insulator 6 in the same position as that of 8B in the first embodiment shown by the dotted line 8C in FIG. In this case, the inertia sphere 8 and the housing (the inertia sphere 8 is blocked at the position of 8C by the inlet edge portion 61E and the dish edge portion 6E). Maintain a small distance from the inner wall of 2) and do not make contact with both members.

Moreover, the length is set so that the tip 9D of the wing | blade part 9A may not contact a housing inner surface, of course.

For this reason, the damping element 60 does not output the ON signal at the maximum amplitude, and it is certainly in the OFF signal state even when the control target device is inclined or inverted.

In addition to the basic role described above, this damping element 60 has features not found in other embodiments as follows.

In other words, when the damping element 60 is subjected to a strong shock or repeatedly impacted, the inertia sphere 8 and the upper insulator are not provided with the evacuation groove 61F as in the other embodiments or the prior art described above. The wing portion 9A is sandwiched between the inlet edge and plastic deformation may occur, thereby changing the characteristics as a damping element.

In this embodiment, since the wing terminal 9D pressed by the inertia sphere 8 enters the evacuation groove 61F, neither the narrowing nor deformation occurs.

Again, the first stepped portion 61C is formed inside the upper insulator 61, so that the spring of the inertia sphere 8 when the sensing element 60 is transported or the sensing element becomes conductive, especially in the inverted state. The movement position is impeded at the position indicated by 8D in FIG. 9, and neither the inertia sphere 8 collides with the bottom root of the wing portion 9A nor the metal support plate 62, and the inertia sphere 8 The surface of the metal is prevented from being scratched or peeled off from the surface treatment such as plating.

Moreover, since the cutting part which reaches the 2nd step part 61H is formed in the position corresponding to the wing | blade part of 61 C of step parts, in this position, the wing | blade part 9A is the inertia port 8 and the upper insulator 61, too. It is not fitted by the wah and can prevent deformation of the wing.

As described above, according to the configuration and manufacturing method of the present embodiment, when the upper insulator 61, the upper contact member 9 and the support plate 62 are fixed to the disk 3A, the wing portions 9A of the upper contact member are simultaneously prescribed. It is possible to form automatically in the shape of, so that the plate-shaped upper contact member 9 does not need to be deformed to a predetermined shape in advance, and can be handled as a plane, which makes the handling very easy.

In addition, the shape of the upper contact member 9 can be determined by the shape and positional relationship of the peripheral parts centered on the upper insulator and the support plate, which is difficult to process into a predetermined shape because of its flexibility in the past. It is easy to equip and can eliminate the nonuniformity of performance as a damping element.

In addition, since the upper contact member 9 does not need to be processed in advance, the number of processes during manufacture is reduced.

When slightly supplemented here, the upper contact member on the support plate 62 is placed on the support plate 62 in a manner of superimposing the upper contact member 9 and the support plate 62 on the upper insulator 61 facing upward in the manufacturing procedure described above. After superimposing (9) at the center thereof, the cup inlet of the upper insulator 61 may be covered downward to temporarily fix the conductive insulator pin 4 fixed to the disc 3A. The wing 9A may be pushed into the through hole 61A of the C) and pushed into the cup bottom surface 61B of the upper insulator 61 by the above-described method.

In the present embodiment, the example in which the guide plate 62 is slid to guide the north portion 61D of the upper insulator is explained. However, the anti-rotation structure of the both sides is not limited thereto, and the upper portion of the upper portion is concave. The shape of the cup bottom face of the insulator may be inversely concave-convex and the support plate may be adjusted therein so that the mutual rotation does not occur.

Next, a seventh embodiment will be described with reference to FIGS. 15 and 17. FIG.

The cup shape of the upper insulator 71 in the damping element 70 is slightly simplified compared with the sixth embodiment described above. The cup inlet edge 71D has a cross section at each position corresponding to the wing portion 9A. A V-shaped retraction groove 71E is formed, and one step portion 71C is formed in the middle of the inside of the cup between the inlet edge 71D and the cup bottom surface 71B.

In this embodiment, the shapes of the cup bottom surface 71B and the stepped portion 71C are concentric circles.

The method of assembling the upper portion 9A to the upper insulator 71 while pushing the wing portion 9A into the stepped portion 71A of the stepped portion 71C and deforming it is the same as in the sixth embodiment. In this embodiment, the post-deformation posture of the wing | blade part 9A is not cylindrical but is made into the shape slightly expanded to an umbrella shape.

The support plate for pushing the central portion of the upper contact member 9 into the cup bottom surface 71B is, in this embodiment, a cap-shaped support plate 72 made of metal, the inlet edge 72B of which is slightly enlarged outward and slightly winged at its outer circumference. The portion 9A is pushed and enlarged to a predetermined enlargement type.

In the present embodiment, since the wings are enlarged, the diameter of the cup bottom surface 71B is set smaller than the diameter of the circle corresponding to the sixth embodiment.

The construction and arrangement of the other members are the same as those in the other embodiments.

The assembly of the upper contact member 9 to the upper insulator 71 in this embodiment is the same as in the sixth embodiment, but the wing portions 9A, which are not subjected to bending processing, are brought into the evacuation groove 71E. The projection of the welding portion 72A at the center of the support plate 72 is fitted into the center attachment hole 9B of the upper contact member 9 to slide the support plate 72 from the step portion 71C to the cup bottom surface 71B. The wings 9A are guided to be concentric with the cup bottom 71B.

In this example, since the evacuation groove 71E also serves as the guide groove 61G in the sixth embodiment, the evacuation groove 71E is formed so that the wing portion 9A is well positioned in the center of each groove. As you can see at 15 degrees, it is not flat bottom but V-shaped.

Also in this embodiment, when the inertia sphere 8 is rotated left and right to push the wing portion 9A, it is understood that the wing enters into the evacuation groove 71E and is not caught between the cup inlet edge 71D of the upper insulator 71. Will be.

At this time, transmission of the inertia sphere 8 stops at the position indicated by (8F) of FIG. 14 by the inlet edge 71D and the plate edge portion 6E of the lower insulator 6, and does not contact the housing 2. .

In the middle of transport, when the inertia sphere 8 springs violently and collides with the support plate 72, the inertia sphere 8 is in the position indicated by 8E in the same drawing and does not come into contact.

Since the collision with the support plate 72 is smoothly formed so that the support plate inlet edge 72B extends outward, the surface of the inertia sphere 8 does not collide at a sharp angle, so the plated layer of the surface of the inertia sphere 8 The back is never hurt.

This seventh embodiment is simplified in the configuration of the step inside the cup of the upper insulator 71 and the construction of the evacuation groove which also serves as the guide groove at the inlet edge, compared with the sixth embodiment described above. It is easy to handle and the wing 9A deforms in a predetermined form at the same time as the assembly to the upper insulator 71 is the same.

Others impart a desired inclination to be enlarged and opened in an umbrella shape with respect to the wing portion 9A, and for welding to the inside of the support plate 72 in a work process of welding the support plate 72 to the conductive terminal pin 4. It is easy to determine the center by inserting a welding electrode (not shown) which is a jig.

The operation of each damping element from the second to seventh embodiments described above is the same as the damping element 1 of the first embodiment.

In other words, the inertia sphere 8 and the bottom contact member (when the stationary circuit from the conductive terminal pin 4 to the bottom contact member 7 remains in the ON state when the stationary state is in a normal attachment posture and receives a vibration exceeding a specified level). 7) The contact is disconnected to generate an OFF signal, which is provided as a vibration detection signal to each control target device (not shown), and if there is an earthquake after judging whether it is supported by the width and the period of the OFF signal, such as automatic fire extinguishing, etc. Appropriate security measures are taken.

For example, the method of attaching the sensing element of each of these embodiments to the above-described control target device is also described in Korean Application No. 199551 of the present applicant, but is described again here for confirmation.

Next, the damper 81 shown in FIG. 16 and FIG. 17 is an embodiment which has the resin case 82 which is a member which keeps the damping element 1 mentioned above in a regular posture, for example, The through-hole 82A in which the welding pin 83 is fixed to the housing 2 of the housing 1 is inserted from the opening of the case and the conductive terminal pin 4 and the welding pin 83 are drilled in the case. The sensing element is positioned by inserting the disc 3A of the lid 3 into contact with the surface holding portion 82C on the surface of the case 82 or at least three projections inside the casing 82B. .

In this state, the damping element 1 is fixed to the case 82 by welding the terminals 84 and 85 to the terminal portions protruding above the case of the conductive terminal pin 4 and the welding pin 83, respectively. .

When attaching the damper 81 to, for example, a petroleum fan heater, the case bottom surface 82D is brought into close contact with a horizontal surface of a bottom plate of a petroleum fan heater (not shown), and a screw is provided through a fixing hole 82E. 81 is fastened and fixed, so that the damping element 1 has a predetermined position between the case bottom 82D and the damping element 1 of the damper 81 so as to be in a normal posture.

In addition, in the present embodiment, an example in which the case is attached to the horizontal surface has been described. However, it is possible to easily make the attachment surface, for example, a vertical surface or an inclined surface at a predetermined angle, by changing the design of the shape of the case.

In addition to this, the means for maintaining the damping element in a normal posture can be considered in various forms. For example, the conductive terminal pin 4 is welded with a predetermined mechanism such as a door shape or an L-shape to attach a predetermined mechanism. It is attached to the surface to keep the sensing element in a regular posture, or to suspend the sensing element in a case in which silicon oil or the like with appropriate viscosity is injected so that the sensing element itself has an automatic posture correction function. It is a well-known means from Unexamined-Japanese-Patent No. 141551, Unexamined-Japanese-Patent No. 62-204155, Unexamined-Japanese-Patent No. 6-50804, etc.

As described above, the damping element of the present invention is a normally closed contact method using a metal sphere, and the contact member is engaged with the lower insulator to prevent the lower contact member from being displaced and impair the operation characteristics. The method is improved by the way that the engagement force of the conventional elastic fitting is concentrated in the Korean part, so that a part of the insulator is fixed by heat deformation in the lower insulator and the fitting part, or the fitting part is kept under the inelastic fitting. By installing a step on the housing side that houses the insulator or by adding a spacer on the lower side of the lower insulator, the lower contact member is prevented from inclining or shifting its position, thereby maintaining stable operation characteristics. The projections of the upper and lower insulators can be prevented or Realizing a group formed hameuroseo prevent deviation of the position or to and achieve the purpose of long-term stable maintenance of the operating performance of the gamjin element.

In addition, in order to solve the problem that the handling of the contact member is very troublesome and difficult in the assembling process of the upper contact member with the upper insulator, the contact member is provided to the assembly in the unfolded state before the bending of the contact member, and automatically at the time of assembly. Handling of the wings was made remarkably easy by the required bending processing.

As a result, the shape of the upper contact member can be determined by the shape and positional relationship of the peripheral parts centered on the upper insulator and the support plate. It is easy to make it possible to eliminate the nonuniformity of performance as a damping element.

It also eliminates the need for prior wing bending and eases assembly, reducing costs.

Again, the damping element of the present invention has an upper insulator assembling the upper contact member when the inertia sphere is driven violently or frequently by a configuration having a groove supporting the wing by guiding its relative position with the insulator. When attempting to fit a wing between the edge of the cup inlet of the upper insulator, the wing does not fit into the retracted groove, thereby avoiding plastic deformation or generating a change in the damping motion characteristics accompanying the deformation. do.

The surface plating layer of the inertia sphere is constructed so that the inertia sphere does not directly collide with the support plate even when the transport starting inertia sphere bounces violently against the support plate of the wing portion used in the above-described manufacturing method. The back is not damaged.

Thus, the damping element of the present invention realizes various effects in terms of maintaining the reliability of the performance.

Claims (12)

The lid 3 is formed by penetrating and fixing the conductive terminal pin 4 in an insulated state in the center of the conductive disk in a gastight manner, and the airtight container is composed of a cylindrical conductive housing having the lid 3 and the bottom. Substantially, the inclined surface 6A gradually rising in a substantially concentric circle near the bottom of the container toward the outside and the lower insulator 6 having the through hole 6B in the center of the inclined surface 6A are substantially provided. The upper insulator which is fixed, the electrically conductive inertial sphere 8 is freely mounted on the inclined surface 6A, the cup inlet side faces downward, and the conductive terminal pin 4 penetrates the center thereof. (11) (51) (61) (71) are fixed to the upper part in the above-mentioned container, and the said flexible pin part (9A) radially centered at the lower end of the conductive terminal pin (4). In contact with the inertia sphere 8, and following the movement of the sphere The conductive upper contact member 9 which maintains contact is fixed by welding the support plates 10, 62, 72 to its pins, and a connecting piece extending at least at one edge thereof is electrically connected to the housing, and The lower contact member 7 whose contact portion in the center portion is inserted through the lower insulator 6 through hole 6B is elastically contacted with the inertia sphere 8 on the through hole 6B. 6) and the electrical connection between the inertia sphere 8 and the lower contact member 7 when the housing is in a normal position is provided on the inclined surface 6A. When stationary, the contact of the contact portion on the inclined surface 6A center through hole 6B against the pushing force of the lower contact member 7 contact force due to the gravity of the spherical body and the elasticity imparted by the wing portion 9A described above. Stay in position and the contact is interrupted when the sphere The lower contact member 7 and the lower insulator 6 are fixed to each other by fitting the lower insulator 6 into the housing and simultaneously connecting the connecting pieces of the lower contact member 7 to the housing. When the contact portion of the lower contact member 7 maintains a predetermined position in the through hole 6B of the lower insulator 6, the relative position of the lower contact member 7 and the lower insulator 6 is substantially A damping element, characterized in that configured to be maintained. The method of claim 1, wherein the fixing between the lower contact member 7 and the lower insulator 6 is such that the fixing portion on the lower surface of the lower insulator 6 is connected to the through hole 6B of the lower contact member 7. A damping element, characterized in that the relative position is determined by widening and deforming the portion of the fixing portion that is inserted through and penetrates the through hole 6B. The method of claim 1, wherein the outer circumferential portion of the lower contact member 7 is squeezed and fixed between the lower outer circumference of the lower insulator 6 and the step portion 22A formed near the bottom of the housing. Characterized in sensing elements. 2. The fixing of the lower contact member 7 and the lower insulator 6 with each other supports the lower contact member 7 between the lower insulator 6 and the bottom of the housing. Sensing element, characterized in that the relative position is determined by mounting the spacer 32 formed so as not to interfere. 2. The projection 2A of claim 1, wherein a protrusion 2A protrudes inwardly at a predetermined number of places on the circumferential wall of the housing circumferential wall in order to prevent misalignment after the lower insulator 6 is inserted into the housing. Sensing element. The upper insulator (11) according to claim 1, wherein a protrusion (51A) is formed on the outer circumferential upper end of the upper insulators (11) (51) (61) (71) and engaged with the flange portion of the upper end of the housing described above. A damping element, characterized in that it prevents misalignment of the position below 51), 61, and 71. 2. The upper portion of the upper portion by the support plates (10) (62) (72) of the upper insulator (11) (51) (61) (71) to the stepped portion (22A) and the cup bottom (61B) (71B). A sensing element characterized in that the contact member (9) is sandwiched and the support plates (10) (62) (72) are conductively fixed to the bottom surface of the conductive terminal pin (4). The wing terminal of the upper contact member (9) near the inlet edge of the upper insulator (11) (51) (61) (71) is an inertia (8) and the upper insulator (11) (51). A damping element, characterized in that the evacuation groove (61F) (71E) is formed so as not to be caught between (61) and (71). The guide groove (61G) is formed in the center of the evacuation groove (61F) 71E formed near the inlet edge of the upper insulator (11) (51) (61) (71). Sensing element. An airtight container is formed by a cylindrical conductive housing having a lid 3 and a bottom, which are electrically sealed in a penetrating state by an electrically insulating filler in a hole punched in the center of the conductive disc. The freely inertial sphere 8 is housed in an airtight container, and from the upper portion thereof, the conductive upper contact member 9 and the flexible wing portion 9A come into contact with the inertial sphere 8 to maintain a conductive state at all times. The lower part is a cup-shaped upper insulator (11) (51) (61) (in the manufacture of a normally closed contact type sensing element having a structure in which electrical connection with the conductive lower contact member (7) is disconnected when the sphere is driven. 71 has a through hole 6B through which the conductive terminal pin 4 is inserted in the center thereof, and the upper contact member 9 is supported on the cup bottom surfaces 61B and 71B by the support plates 10 and 62. As described above, the flat unfolding posture is inserted by inserting the support plates 10, 62, and 72 into 72. The opening 9A is press-formed like a press molding to form a cylindrical deformed shape or an umbrella deformed shape having a flat predetermined inclination of the head, and the supporting plates 10, 62 and 72 are formed of the conductive terminal pins 4, respectively. The lower insulator 6 having the lower contact member 7 gripped and fixed at a predetermined position is mounted on the inner bottom side of the housing, and the above-described inertial sphere 8 is mounted thereon. The disc of the lid 3 is hermetically fixed to the opening end of the housing in such a state that the upper contact member 9, which has completed the molding, is inserted into the housing and is in a state of being placed in constant contact with the inertial sphere 8 described above. Method for producing a sensing element characterized in that. The shape of the support plates (10) (62) (72) according to claim 10, wherein the shape of the support plates (10) (62) (72) has a cup bottom surface (61B) (of the upper insulators (11) (51) (61) (71) with a portion of the disc having concave and convex portions. 71B) is formed in the support plate 10, 62, 72, and the corresponding portion corresponding to the concave and convex portions to prevent rotation of each other and the wing terminal of the upper contact member 9 before the indentation deformation is the upper insulator ( 11) 51, 61, 71 are supported by the guide grooves 61G of the central portion of the evacuation grooves 61F, 71F installed in the inlet edge portion of the support plate (10, 62, 72). The wing portion 9A of the upper contact member 9 is positioned at the inlet edge of the step portion 22A of the cup bottom surfaces 61B and 71B while being press-fitted into the cup bottom surfaces 61B and 71B in accordance with the alignment portion. A method for producing a sensing element, characterized in that the molded by the cylindrical type. 11. The support plate (10) (62) (72) of claim 10 uses a cap shape that is easy to be supported on the jig for welding, and the upper insulator (11) (51) (61) (71) is a retraction groove ( 61F) 71E is formed into a substantially V-shaped cross section, and the wing portion 9A of the upper contact member 9 before the indentation deformation is guided to the evacuation grooves 61F and 71E to sink and support plate 10. Method of manufacturing a sensing element characterized in that it is molded into a flat head umbrella offset by being pressed by (62) (72).